Updated mediawiki/extensions
Project: mediawiki/extensions/WikibaseDataModel  fcd9d696010337c8930e27265868683edd83b445

Add @covers tags

Change-Id: I1d9483de8f8c53c1484516ca586cdc3a3bebf75a

Move ObjectComparer to internal NS and add PSR-0 based loader

Change-Id: I5ca70df9be7612f97c2969b3907c932a1b0dc983